Rabbitmq 主题模型

Rabbitmq 主题模型 topic模型

动态订阅模型，可以使用通配符进行绑定
这种模型的RoutingKey一般是由一个或多个单词组成，多个单词之间用"."分割，例如 item.insert
通配符：
- * 匹配不多不少恰好一个词
- # 匹配一个或多个词（采用hash策略）

生产者

package com.huixiang.rabbitmq.topics;

import com.huixiang.utils.RabbitmqUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

// 主题模型（topic quene）   生产者    动态路由
public class Productor {

    public static void main(String[] args) {
        Connection connection = null;
        Channel channel = null;
        try {
            // 获取连接
            connection = RabbitmqUtils.setConnection();
            // 获取通道
            channel = connection.createChannel();
            // 指定key名
            String keyName = "logs.topic.save";
            
            channel.exchangeDeclare("logs_topic","topic");
            //要多条。所以用循环
            for (int i =0;i<10;i++){
                //生产消息
                channel.basicPublish("logs_topic",keyName,null,"nihao".getBytes());
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            RabbitmqUtils.closeConnectionChanel(channel,connection);
        }
    }
}

消费者1

package com.huixiang.rabbitmq.topics;

import com.huixiang.utils.RabbitmqUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class Consumer1 {
    public static void main(String[] args) {
        Connection connection = null;
        Channel channel = null;
        try {
            connection = RabbitmqUtils.setConnection();
            channel = connection.createChannel();
            // 创建临时对列
            String queue = channel.queueDeclare().getQueue();
            // 指定key名
            String keyName1 = "logs.#";
            
            channel.exchangeDeclare("logs_topic","topic");
            // 交换机绑定对列（临时对列）
            channel.queueBind(queue,"logs_topic",keyName1);
            
            channel.basicConsume(queue, true, new DeliverCallback() {
                @Override
                public void handle(String consumerTag, Delivery message) throws IOException {
                    System.out.println("消费者1：收到消息" + new String(message.getBody(), "UTF-8"));
                }
            }, new CancelCallback() {
                @Override
                public void handle(String consumerTag) throws IOException {
                    System.out.println("失败");
                }
            });
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}

消费者2

package com.huixiang.rabbitmq.topics;

import com.huixiang.utils.RabbitmqUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class Consumer2 {
    public static void main(String[] args) {
        Connection connection = null;
        Channel channel = null;
        try {
            connection = RabbitmqUtils.setConnection();
            channel = connection.createChannel();
            // 创建临时对列
            String queue = channel.queueDeclare().getQueue();
            // 指定key名
            String keyName1 = "logs.topic.*";
            
            channel.exchangeDeclare("logs_topic","topic");
            // 交换机绑定对列（临时对列）
            channel.queueBind(queue,"logs_topic",keyName1);
            
            channel.basicConsume(queue, true, new DeliverCallback() {
                @Override
                public void handle(String consumerTag, Delivery message) throws IOException {
                    System.out.println("消费者1：收到消息" + new String(message.getBody(), "UTF-8"));
                }
            }, new CancelCallback() {
                @Override
                public void handle(String consumerTag) throws IOException {
                    System.out.println("失败");
                }
            });
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}